Answer:
The program in Python is as follows:
def interest(P,R,T):
 

 return I
 
P = float(input("Principal: "))
R = float(input("Rate (%): "))
T = float(input("Time (years): "))
print(interest(P,R,T))
Step-by-step explanation:
Required
Simple interest program using function
This defines the function
def interest(P,R,T):
This calculates the simple interest
 

This returns the calculated interest
 return I
The main begins here
These get inputs for principal, rate and time
P = float(input("Principal: "))
R = float(input("Rate (%): "))
T = float(input("Time (years): "))
This calls the interest function
print(interest(P,R,T))